That's a fair question and observations with what I think are reasonable answers.

Exactly how those IEDs are placed, who does it, how they are detonated, how strong the follow-up attacks may be and where and how they leave afterward is essential knowledge for those on the scene. I found it fascinating.

I'm familiar with a local sneaking out and placing a mine, or one person observing with a remote device. Maybe follow-up with a platoon-sized force. But not with this disorganized and loose arrangement.

It was also interesting to learn how the insurgents could move safely through the population, and how NATO forces couldn't move without being tracked by the enemy. That means the US is fighting the entire population, and is not seen as a liberator.

I guess cellphones are used because there can be no real time interception and processing of the signals.

I suspect these guys may have been misfits had they been in Iraq, a country which has had a national army and fought wars as a nation. They would have a more military tradition, training and discipline. Afghanistan has no national identity, even, at least internally. It has always been tribal, with marginal training. The brief clips of folks clambering out of culverts right in front of the camera are, I think, propaganda intended to scare Westerners. These folks are physically tough already, used to the area, and their training is more along the lines of some familiarization with weapons, a very little on communications and small unit tactics

As far as beheading the journalist, I think that is common. Not the beheading, but killing those with information. Taking prisoners requires quite an infrastructure, and anyone on any side travelling fast, small and vulnerable simply cannot do it. That's one reason some people don't talk about their military experiences - there's little of which to be proud. If anything.

As far as killing infidels is concerned, it looks to me that is an issue, with the additional qualifications that it's killing infidels who are over in my country trying to take away my land and way of life.

I think the entire issue isn't that the US is a land of infidels but that it's a land of infidels over here.

Overall I found the documentary quite illuminating, and it answered a lot of questions I had. And it does not seem to have had much, if any, appeal to others. I'm very surprised.